Many scenes from the books were deleted; in fact, the whole of the first book was condensed into fifteen minutes of film. Events were changed and some were added. For example, the Great Inca's Daughter was introduced, who tried to beg her father to spare the prisoners and likes Zorrino. Also, Thomson and Thompson accompany Tintin and Captain Haddock on their quest to rescue Calculus, whereas in the book their only role was attempting to use dowsing in order to find Tintin and his friends, and their arrival in the Incan village delays the execution.